Adding upstream version 115.7.0esr.upstream/115.7.0esrupstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 36 insertions, 0 deletions

diff --git a/third_party/rust/rure/src/macros.rs b/third_party/rust/rure/src/macros.rs
new file mode 100644
index 0000000000..7807cf8535
--- /dev/null
+++ b/third_party/rust/rure/src/macros.rs
@@ -0,0 +1,36 @@
+macro_rules! ffi_fn {
+    (fn $name:ident($($arg:ident: $arg_ty:ty),*,) -> $ret:ty $body:block) => {
+        ffi_fn!(fn $name($($arg: $arg_ty),*) -> $ret $body);
+    };
+    (fn $name:ident($($arg:ident: $arg_ty:ty),*) -> $ret:ty $body:block) => {
+        #[no_mangle]
+        pub extern fn $name($($arg: $arg_ty),*) -> $ret {
+            use ::std::io::{self, Write};
+            use ::std::panic::{self, AssertUnwindSafe};
+            use ::libc::abort;
+            match panic::catch_unwind(AssertUnwindSafe(move || $body)) {
+                Ok(v) => v,
+                Err(err) => {
+                    let msg = if let Some(&s) = err.downcast_ref::<&str>() {
+                        s.to_owned()
+                    } else if let Some(s) = err.downcast_ref::<String>() {
+                        s.to_owned()
+                    } else {
+                        "UNABLE TO SHOW RESULT OF PANIC.".to_owned()
+                    };
+                    let _ = writeln!(
+                        &mut io::stderr(),
+                        "panic unwind caught, aborting: {:?}",
+                        msg);
+                    unsafe { abort() }
+                }
+            }
+        }
+    };
+    (fn $name:ident($($arg:ident: $arg_ty:ty),*,) $body:block) => {
+        ffi_fn!(fn $name($($arg: $arg_ty),*) -> () $body);
+    };
+    (fn $name:ident($($arg:ident: $arg_ty:ty),*) $body:block) => {
+        ffi_fn!(fn $name($($arg: $arg_ty),*) -> () $body);
+    };
+}